I tried a mod for it before, but all it did was made my level 80 character unplayable. The save files can still be found in the saves folder, but can't be accessed in-game. Any mods that won't mess up my current character? He's level 73 and I intend on completing the game(yes, all quests and every location) with him, and stray off with new characters every now and then.

Any advice? Thanks in advance.